OBD Guide
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B023A

HVAC Actuators Supply Voltage

B023A is an OBD-II diagnostic trouble code meaning: HVAC Actuators Supply Voltage. Common causes: open or short circuit in hvac drive harness, malfunction of the relay or fuse of the drive power supply circuit. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Incorrect operation of the climate control system
  • Lack of response to changes in temperature settings or air flow direction
  • HVAC dampers do not move

Causes

  • Open or short circuit in HVAC drive harness
  • Malfunction of the relay or fuse of the drive power supply circuit
  • Problems with the HVAC control unit
  • Failure of one or more damper actuators

How to Fix

  1. Check the fuse and relay of the HVAC drives power supply circuit
  2. Inspect the wiring harness for damage
  3. Check the voltage at the drive connectors
  4. Test the operation of each drive using a diagnostic scanner
  5. Replace faulty components

Related codes

B0238B0239B023B

Error B023A by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the B023A code mean?

B023A is an OBD-II diagnostic trouble code that indicates: HVAC Actuators Supply Voltage

What causes a B023A error code?

The most common causes of B023A include: Open or short circuit in HVAC drive harness; Malfunction of the relay or fuse of the drive power supply circuit; Problems with the HVAC control unit; Failure of one or more damper actuators.

How do I fix a B023A diagnostic trouble code?

To fix B023A: Check the fuse and relay of the HVAC drives power supply circuit. Inspect the wiring harness for damage. Check the voltage at the drive connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B023A?

Yes, but get it checked soon

How much does it cost to fix B023A?

The estimated repair cost for B023A is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat